/**
 * Copyright 2007 Igor Chaves Cananéa
 *
 * This file is part of PBSFW
 *
 * PBSFW is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * PBSFW is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef _DISTRIBUTION_FACTORY_H_
#define _DISTRIBUTION_FACTORY_H_

#include "distribution.h"

namespace statistic {
	class DistributionFactory {
		private:
			DistributionFactory() {}

		public:
			static Distribution &chisquare(double degrees,
										   double convertRate = 1.0);

			static Distribution &constant(double value,
										  double convertRate = 1.0);

			static Distribution &exponential(double interarrival,
											 double convertRate = 1.0);

			static Distribution &gamma(double scale, double shape,
									   double convertRate = 1.0);

			static Distribution &lognormal(double average, double stdDev,
										   double convertRate = 1.0);

			static Distribution &normal(double average, double stdDev,
										double convertRate = 1.0);

			static Distribution &pareto(double scale, double shape,
										double convertRate = 1.0);

			static Distribution &paretoII(double scale, double shape,
										  double convertRate = 1.0);

			static Distribution &poisson(double average,
										 double convertRate = 1.0);

			static Distribution &uniform(double lowerbound, double upperbound,
										 double convertRate = 1.0);
	};
};

#endif
